This is a right hand with its inside facing forward, and the whole hand is facing leftwards. It is a new emoji belongs to Emoji 14.0 which released in September 2021.
🫲 means left hand, or some hand movement like reaching, helping hand, pull, pat, tap or touch. It can also correspond to the rightwards hand emoji
🫱 to indicates hand-shake
🤝. Related emojis:
🙌👏🤛👈